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我正在使用AdventureWorks2014编写SQL查询,并且我有一个订单日期并将其切割为一周中的几天,几个月,几天等等。当我使用一个查询,它列出所有的月份和这个给定的时间间隔内的订单数量时,它会忽略那些没有订单的月份。我想在那里有一个月零订单,但我不知道如何改变这一点。列出月份与订单数量,AdventureWorks2014
这里是我的查询:
SELECT DISTINCT
a.SalesOrderID,
CONCAT(DATEPART(yyyy,OrderDate), RIGHT('00' + CONVERT(NVARCHAR(2), DATEPART(MONTH, OrderDate)), 2), RIGHT('00' + CONVERT(NVARCHAR(2), DATEPART(DAY, OrderDate)), 2)) AS TimeID,
DAY(OrderDate) AS Day,
DATEPART(WEEKDAY, OrderDate) AS 'DayOfWeek',
DATENAME(WEEKDAY, OrderDate) AS 'DayOfWeek Name',
MONTH(OrderDate) AS MONTH,
DATENAME(Month, OrderDate) AS 'Month Name',
DATEPART(QUARTER, OrderDate) as 'Quarter',
YEAR(orderDate) AS YEAR
INTO
[DW].[DIMTime]
FROM
[AdventureWorks2014].[Sales].[SalesOrderHeader] a;
SELECT
MONTH, year, COUNT(SalesOrderID)
FROM
[DW].DIMTime
GROUP BY
MONTH, Year
ORDER BY
Year, Month
我希望你能帮助我!在此先感谢